Credit Card Number Generator

Generate Luhn-valid test card numbers for QA and sandbox payments, or validate a card number to detect its brand.

For testing only. These numbers are not real and cannot be used for purchases. Never enter your real card number anywhere on the public internet.

Generator

Optional. Defaults to a random Visa prefix (4…).

Number Exp CVV Holder
10/31864CHARLIE GRAHAM
04/27786MORGAN CARTER
06/27313CHARLIE MORALES
06/27508SAM HOLLAND
01/31615ALEX PATEL

Validator

Do not enter a real card number.

Paste a card number above to see brand, length, and Luhn result.
Reference

Test credit card numbers, explained

Are generated credit card numbers real?

No. This tool produces fake test card numbers for QA, development, and form testing. They are Luhn-valid — they pass the same client-side checksum a payment form runs — but they are not issued by any bank, not linked to any account, and have no funds behind them. A real payment processor will decline them, so they cannot be used for purchases.

What is the Luhn check?

The Luhn algorithm is a simple checksum that most payment forms use to catch typos before a card is submitted. A valid number ends in a correct check digit derived from the others. This tool computes that digit for every generated number and follows each brand's real prefix and length rules, so your test forms accept the data exactly as they would a real card.

Is it legal to use a credit card generator?

Yes, when you use the output to test your own software, forms, and QA flows. These numbers are fake test data, not real cards. What is illegal is using any card number — real or generated — to attempt a real or fraudulent transaction. Keep generated numbers strictly inside your own test environment and never enter a real card number into a tool on the public internet.

What this tool produces

  • Luhn-valid test card numbers for Visa, Mastercard, American Express, Discover, JCB, Diners Club, and UnionPay
  • Optional custom BIN prefixes to target a specific test range
  • A validator that detects brand, checks length, and verifies the Luhn checksum of a pasted number
  • Fully client-side operation — nothing you type or generate is stored or sent anywhere

For software testing only. Generated numbers are fake test data and cannot be used for real transactions.

FAQ
Are these real credit card numbers?
No. The generated numbers pass the Luhn check used by payment forms, but they are fake test data — not issued by any bank, not linked to any account, and they cannot be charged or used for real purchases.
Is it legal to use this generator?
Yes, for testing your own software, forms, and QA flows. The output is fake test data, not a real card. Using any card number — real or generated — to attempt a real or fraudulent transaction is illegal, so keep these strictly inside your own test environment.
Will these numbers work for real purchases?
No. They are not backed by funds and are not connected to any issuer, so a real payment processor will decline them. They only satisfy format and checksum rules so your test forms accept them.
What is the Luhn check?
The Luhn algorithm is a checksum formula that most payment forms run to catch typos before submitting a card. A Luhn-valid number has a correct final check digit; the tool computes this digit so generated numbers pass the same client-side validation real cards do.
Which card brands are supported?
Visa, Mastercard, American Express, Discover, JCB, Diners Club, and UnionPay, each using that brand's real prefix and length rules.
Can I set a custom BIN or prefix?
Yes. Enter the BIN (the leading digits of the card) and the tool fills in the remaining digits and appends a valid Luhn check digit, so you can target a specific test range.
Does the tool store or send anything?
No. Generation and validation run entirely in your browser. Nothing you type or generate is stored or sent to any server.

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Andrei Rovnyi

Engineering manager, founder, and software developer building web platforms, game systems, real-time services, and automation tools. 15 years of shipped work — currently at Gaijin.net.

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